360 oil leak at back of intake manifold

George I have thought about the sending unit as they are crimped over but a clean paper towel plus the wipe test... New oil pressure 1/8 copper line, new compression fittings at oil pressure block that feeds a 100 # gauge inside the car.........so nothing found there.
Aluminum valve covers/Neoprene gasket (High tacked to the valve cover) really cant feel (swipe test) clean paper towel test........
That is a good thought.....
You are right sir about it can make a big mess as oil can wick/move to an area that is hard to really see where its actually coming from.

I am almost at the point of pulling the intake back , reclean, check, loo for defects in the Intake................. Time and intake gaskets are cheap compared to
not seeing the obvious. Just trying all the simple stuff first....... Signed still frustrated in Texas